Roscommon County: Roscommon County

Economic Impact Survey of Eurasian Watermilfoil Removal from Houghton Lake
(HLIP, SePRO, USACE) - property owner survey conducted in October 2003.

Economic Overview for Roscommon County
(Iowa State University) - 1970, 1980, 1990, 1995, 1999 and 2000 data.

Section 302 Reconnaissance Report on Aquatic Plant Control for Houghton Lake and Lake St. Helen, MI
feasibility study in 1986 of providing measures for the control of aquatic growth in these two lakes.